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Hoyt Arboretum Friends (HAF) is a membership-based, nonprofit organization working in partnership with Portland Parks and Recreation to support Hoyt Arboretum.

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Hoyt Arboretum's plant database is maintained and updated by Hoyt Arboretum Curator Martin Nicholson and several highly-qualified volunteers.

Much of the value of Hoyt Arboretum’s trees and collections are invisible to the naked eye. When you look at one of the arboretum’s dawn redwoods (Metasequoia glyptostroboides), you may see a tree that looks exactly like others planted elsewhere. However, Hoyt Arboretum’s trees have a pedigree, or provenance, meaning that they were grown from seeds collected in the wild and the arboretum has documentation on where and when the seeds were collected. This means that scientists wanting to do research on native dawn redwoods, for example, which are otherwise found only in a small, remote valley in central China, can use Hoyt’s trees for data and specimens. 

To maintain the provenance of the plants, Hoyt Arboretum has kept records continuously since the first seeds were propagated at Mt. Tabor's nursery beginning in 1914. Early records were kept on index cards. A dedicated volunteer, Oliver Dalton, converted these records to a computerized database in the early 1980s. 

Thanks to a grant from the J. Frank Schmidt Foundation and a partnership with Leach Botanical Garden and Portland Parks & Recreation, we now have a state-of-the-art plant database that is easy for all interested parties to use.

Today, approximately 6,300 plants can be found in the database. Each entry contains information (if available) on family, genus, species, common name, variety, cultivar, provenance, specific location in Hoyt Arboretum, and selected photos of the actual arboretum specimen. The database allows the user to search for plants by family genus, species, common name and location in the arboretum.

Use the button below to access the online version of the Hoyt Arboretum Plant Database. The link will take you away from the Hoyt Arboretum website and connect you with our server of plant information.  Enjoy!

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Use the button above to access the Hoyt Arboretum Plant Database. Please be aware that this link will open a new page, which will be separate from the Hoyt Arboretum website. 

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